Truss Attachment Information


Would you please inform me of the specified requirements of the size and the amount of nail attachments from the truss to the top plate?


There are prescriptive provisions in IRC 2012/2015 R802.11 for roof tie-down to resist uplift. It permits attachment per IRC 2012/2015 table R602.3(1) item 5, which includes toe-nailed connections.

SBCA addresses this topic in Research Report 1507-11: Truss Uplift Design and the BCSI-B8 Summary Sheet, which covers the correct usage of toenailing as a means of uplift connection.

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